The Master of Darkness teams with Scotland Yard's Eric Delka in two thrilling tales of international intrigue by Walter Gibson writing as "Maxwell Grant." First, The Shadow investigates an international spy ring with the assistance of "The Man from Scotland Yard" (in his first appearance). Then, The Shadow and Delka's investigation of missing submarine plans sets them on the trail of the legendary Parisian super-criminal, Gaspard "Zemba," in Walter Gibson's all-time masterpiece of misdirection! This instant collector's item showcases both classic pulp covers by George Rozen original interior illustrations of Tom Lovell, and commentary by Will Murray.